2
by Friedl, Gunther, Kühling, Jürgen
Published 2016
Nomos Verlagsgesellschaft mbH & Co. KG

4
by Kakuk, Christian
Published 2019
Nomos Verlagsgesellschaft mbH & Co. KG

5
by Grunwald, Klaus
Published 2018
Nomos Verlagsgesellschaft mbH & Co. KG

6
by Becker, Manfred
Published 2019
Rainer Hampp Verlag